Terms of Service

Last updated: 5 November 2026

These Terms of Service ("Terms") govern your use of MailTag (the "Service"), operated by Lucas García de Viedma Pérez, a sole trader (NIF 09105953T) established in Spain ("MailTag", "we", "us"). By creating an account or using the Service, you agree to these Terms. If you use the Service on behalf of an organization, you confirm you are authorized to bind that organization.

1. The Service

MailTag connects to the email mailboxes you authorize (over IMAP or, for Outlook and Microsoft 365, through Microsoft's API) and automatically classifies new messages into categories, applying the result as a label, keyword or folder in your mailbox. Optional features include outgoing webhooks on paid plans and, on the Business plan, a triage API. To sort, MailTag only adds labels, keywords or folders; it never deletes email. On paid plans you can also read your email and write, reply to and forward email in MailTag: it is sent from your own mailbox, through your provider, only when you send it or an AI agent you allowed to send sends it, and you are responsible for what you and your agents send. In MailTag you can also archive emails, mark them, and move them to spam or to your mailbox's trash; MailTag never deletes email permanently. You can remove MailTag's labels, keywords and folders from a mailbox at any time in Settings → Mailboxes: emails in MailTag folders go back to your inbox and nothing is deleted.

2. Accounts

• You must be at least 16 years old and provide accurate account information.
• You are responsible for keeping your login credentials and API keys secure and for all activity under your account.
• You may only connect mailboxes you own or are authorized to access, and you are responsible for obtaining any consent required to process email in those mailboxes.

3. Free trial, cancellation and accounts without a plan

7-day free trial. Your first plan starts with 7 free days. You pick the plan and billing period and add a card in Stripe Checkout, after connecting a mailbox and reviewing your labels. During the trial you have the Lite plan's limits (2 mailboxes and 2,000 new emails) and nothing is charged. The trial ends after 7 days or once 2,000 emails have been labeled, whichever comes first. At that point the plan you have is charged automatically and its full limits apply. After that it is charged at the start of each period until you cancel. Stripe emails you a reminder before the trial ends. Each person, email address, connected mailbox address and payment card can have one free trial.

Starting now. You can start without a trial, when you pick the plan or later from your account. The plan is then charged at that moment. If your card already had the trial, the plan also starts and is charged when you add the card.

Right of withdrawal. If you are a consumer in the EU/EEA or UK, you normally have 14 days to withdraw from a contract for digital services. By ticking “I accept the terms. I understand that periods aren't refunded.”, you ask us to start the Service immediately and acknowledge that you lose the right of withdrawal for each charge once it has been made. The same applies when you confirm a charge in your account (starting now, upgrading or paying a pending charge): the amount is shown on the button before you confirm.

No refunds. Except where the law requires, charges are not refunded, including for partial periods. If you believe you were charged in error, write to us from the chat in the app.

Cancelling. You can cancel at any time from your account. If you cancel during the trial, you are not charged and you keep access until it ends. If you cancel later, your plan doesn't renew and you keep access until the end of the period you paid for.

Changing plans. You can change your plan and billing period from your account. Before you confirm, you see what you pay today.

• During the trial, a change is immediate and free: the trial carries on as it is and the first charge is for the new plan.
• After the trial, an upgrade applies at once. You pay the new price prorated to your next billing date, with credit for the unused part of the previous plan, and your billing date doesn't change.
• Switching from monthly to yearly, on the same plan or a higher one, also applies at once: you pay the year less what's left of the month you paid for, and the year starts that day.
• A downgrade, or switching from yearly to monthly, applies at the end of the paid period, with no refund or credit.
• If the new plan includes fewer mailboxes, on that day the most recently added are disconnected and their stored credentials deleted. Labels already applied stay.
• Plans can't be changed while a free code is active; write to us from the chat in the app.

Failed charges. If a charge fails, we keep sorting your email while Stripe retries it for a few days. Meanwhile you can pay it or change the card from your account. If it can't be collected, MailTag stops sorting new email until it is paid; your labels stay. Once it is paid, your plan carries on as it was.

Accounts without a plan. If the trial is cancelled or the subscription ends, your account stays but has no plan: labels already applied stay in your mailbox, but MailTag stops sorting new mail. After 90 days without a plan we delete the stored mailbox credentials (app passwords); we email you a week before. You can choose a plan again at any time, and you can delete your account at any time from your account settings.

4. Plans, billing and cancellation

• Plans are billed monthly or yearly in advance, after the free trial described in section 3. Orders are processed by Stripe, which acts as merchant of record (reseller) for MailTag subscriptions and is responsible for calculating, collecting and remitting applicable sales tax, VAT or GST. Your payment is subject to Stripe's terms for that transaction. Current prices and limits are shown on our pricing page.
• Each plan includes a monthly email volume. When you reach it, processing pauses until the next billing period or until you upgrade.
• You can cancel at any time from your account. Cancellation takes effect at the end of the free trial or of the current billing period; you keep access until then (see section 3).
• Except where the law requires, charges are not refunded (see section 3).
• We may change prices with at least 30 days' notice by email. Changes apply from your next billing period.
• Prices exclude taxes unless stated otherwise; applicable taxes may be added at checkout.

4a. One-time inbox tidy-ups

A tidy-up labels the existing emails of one mailbox's inbox in a date range you choose, for a one-time price based on the number of emails, which we show you before you pay. It is not a subscription. Tidy-ups run in the background at lower priority than live triage; the estimated delivery time shown before payment is an estimate. Tidy-ups only add labels, keywords or move emails into MailTag folders according to your category settings — they never delete email. Each tidy-up covers up to 50,000 emails.

Right of withdrawal. If you are a consumer in the EU/EEA or UK, you have 14 days to withdraw from a purchase of digital services. By ticking the consent box before paying, you ask us to start the tidy-up immediately and acknowledge that you lose the right of withdrawal once the tidy-up has been fully performed. If you withdraw before it is complete, or if the tidy-up cannot be completed (for example because the mailbox is disconnected or its credentials stop working), we refund the share of the price corresponding to the emails that were not processed.

Free trial tidy-up. Each account, and each mailbox address even on another account, can run one free tidy-up of the 50 newest emails of a range. It labels those emails for real, like a paid tidy-up.

History discount on yearly plans. Each yearly plan takes $9 (Lite), $19 (Pro) or $39 (Business) off the price of a history for each paid year, per account. If you upgrade your yearly plan during that year, you get the difference: for example, if you already used $9 with Lite and move to Pro, you have $10 left. You only pay what the discount doesn't cover. During the free trial, the discount only applies if you start your yearly plan now; otherwise the history is paid at full price. While a charge is pending, the history is paid at full price. With a cancellation scheduled, history and the discount stay available until the end of the paid period, and a history already paid for finishes even if the plan ends sooner. While the service is stopped over an unpaid charge, history isn't available. A discount on a history that can't be completed can be used again that same year.

5. Acceptable use

You agree not to:

• connect mailboxes you are not authorized to access;
• use the Service for unlawful purposes or to process data in violation of applicable law;
• attempt to probe, disrupt, overload or reverse-engineer the Service, or bypass usage limits;
• resell or sublicense the Service or the triage API without our written permission;
• use webhooks or the API to send spam or attack third-party systems.

We may suspend accounts that violate these rules or put the Service or other users at risk.

6. Your data

You retain all rights to your email and data. You grant us a limited license to process it solely to provide the Service, as described in our Privacy Policy. Email content is processed in memory and not stored; we store only sender, subject, category and confidence score for your activity log for 30 days and, on paid plans and the trial, an index of your emails (sender, recipients, subject, date, size, state and folder) while the mailbox is connected.

7. Classification accuracy

Classification is automated and probabilistic. Emails may occasionally be categorized incorrectly. Do not rely on MailTag as the sole mechanism for handling time-critical, legal or safety-related communications. You remain responsible for reviewing your email.

7a. Inbox analysis, unsubscribe and sender actions

The inbox analysis is included in every plan and reads message headers only. When you choose Unsubscribe for a sender, you instruct MailTag to send that sender a one-click unsubscribe request over HTTPS on your behalf (RFC 8058). MailTag never sends email for this. When a sender only offers a web page, we open it for you to confirm yourself. We cannot guarantee that a sender honours the request; senders are separately obliged to do so (e.g. GDPR art. 21, CAN-SPAM). Archive, Spam and Always label as move or label existing messages from that sender and create a rule that applies to their future messages until you remove it. Nothing is ever deleted.

8. Third-party services

The Service interacts with your email provider and with destinations you configure (e.g. Slack, Discord, Zapier, Make, n8n). We are not responsible for those services, their availability, or how they handle data you send them via webhooks.

9. Availability and changes

We aim for high availability but do not guarantee uninterrupted service. We may modify or discontinue features. If we discontinue the Service entirely, we will give at least 30 days' notice and refund any prepaid, unused fees.

10. Intellectual property

The Service, including its software, design and branding, is owned by us or our licensors. These Terms do not grant you any rights to our trademarks.

11. Disclaimer

To the maximum extent permitted by law, the Service is provided "as is" and "as available", without warranties of any kind, express or implied, including merchantability, fitness for a particular purpose and non-infringement.

12. Limitation of liability

To the maximum extent permitted by law, we are not liable for indirect, incidental, special, consequential or punitive damages, or for lost profits, revenue or data. Our total liability for any claim relating to the Service is limited to the amount you paid us in the 12 months before the claim. Nothing in these Terms limits liability that cannot be limited by law, including for gross negligence, intent, or death or personal injury caused by negligence.

13. Termination

You may delete your account at any time from your account settings. We may suspend or terminate your account for material breach of these Terms. On termination, we delete your account data as described in the Privacy Policy. When you delete your account or disconnect a mailbox, you can choose to have MailTag remove its labels, keywords and folders from your mailboxes first.

14. Changes to these Terms

We may update these Terms. For material changes we will notify you by email at least 14 days in advance. Continued use after the effective date means you accept the updated Terms.

15. Governing law

These Terms are governed by the laws of Spain. Disputes will be resolved by the courts of Madrid, Spain, without prejudice to any mandatory consumer protection rights you have in your country of residence.

16. Contact

Lucas García de Viedma Pérez
NIF: 09105953T
Avenida de Castilla 6, 5.º B, 28804 Alcalá de Henares (Madrid), Spain
Email: support@mailtag.app