diff --git a/policy/tpa-rfc-15-email-services.md b/policy/tpa-rfc-15-email-services.md
index c0d24e5e3af2f2f686d4e21226f929321601937c..9b64a8d27cb8e88de76a3bab9dfb70193ac0c29b 100644
--- a/policy/tpa-rfc-15-email-services.md
+++ b/policy/tpa-rfc-15-email-services.md
@@ -511,12 +511,14 @@ process follows the [Kaplan-Moss estimation technique][].
 | 1. e2e deliver. checks     | 3 days   | medium      | access to other providers uncertain           | 4.5          |
 | 2. DMARC reports           | 1 week   | high        | needs research                                | 10           |
 | 3. DKIM signing            | 3 days   | medium      | expiration policy and per-user keys uncertain | 4.5          |
-| 4. IMAP deployment         | 2 week   | high        | may require training to onboard users         | 20           |
+| 4. IMAP deployment         | 2 weeks  | high        | may require training to onboard users         | 20           |
 | 5. SPF/DMARC records       | 3 days   | high        | impact on forwards unclear, SRS               | 7            |
-| 6. incoming mail filtering | 1 week   | high        | needs research                                | 10           |
-| 7. new MX                  | 1 week   | high        | key part of eugeni, might be hard             | 10           |
+| 6. incoming mail filtering | 1 weeks  | high        | needs research                                | 10           |
+| 7. new MX                  | 1 weeks  | high        | key part of eugeni, might be hard             | 10           |
 | 8. new mail relays         | 3 days   | low         | similar to current submission server          | 3.3          |
-| 9. Puppet refactoring      | 1 week   | high        |                                               | 10           |
+| 9. Puppet refactoring      | 1 weeks  | high        |                                               | 10           |
+|----------------------------|----------|-------------|-----------------------------------------------|--------------|
+| Total                      | 8 weeks  | high        |                                               | 80           |
 
 This amounts to a total estimate time of 80 days, or about 16 weeks or
 four months, full time. At 50EUR/hr, that's about 32,000EUR of work.