Short answer. Yes. Service to your previous email or fax number remains presumptively valid, because the rule requires you to file a notice of the change within five calendar days and serve it on all other parties; failing to do that does not protect you from service to the outdated address.
What the law says
A party who changes his or her electronic mail address or facsimile number while the action is pending must promptly file, within five calendar days from such change, a notice of change of e-mail address or facsimile number with the court and serve the notice on all other parties. Service through the electronic mail address or facsimile number of a party shall be presumed valid unless such party notifies the court of any change, as aforementioned.
Rule 13, Section 11 — Change of electronic mail address or facsimile number. Read the full provision →
The five-day filing duty
A party who changes an electronic mail address or facsimile number while the case is pending is not free to simply start using the new one quietly and expect everyone else to keep up. The rule requires that party to promptly file a notice of the change with the court, and to serve that notice on all other parties, all within five calendar days from when the change occurred.
What happens if you don't file it
The consequence of skipping this notice is spelled out directly: service through a party's electronic mail address or facsimile number is presumed valid unless that party has notified the court of any change. In other words, the burden of updating the record sits squarely on the party who changed contact details, not on the court or the other side who continue relying on the address that was previously on file.
Why the rule places the risk this way
Placing the burden on the party who changed the address makes practical sense, because the other side and the court have no independent way of knowing about a private change of email or fax number unless they are formally told about it. The presumption of validity for the old address protects the integrity of the service process and prevents a party from later claiming non-receipt simply because they quietly switched to a different email without informing anyone involved.
Practical effect on deadlines
Since service to the old address is presumed valid until proper notice of the change is filed, any period that runs from that service — such as a deadline to respond to a pleading — is computed as if the notice actually reached the party on time, regardless of whether it landed in an inbox the party had already stopped checking or abandoned altogether.
Related provisions
- Rule 13, Section 11 — Change of electronic mail address or facsimile number
- Rule 13, Section 10 — Presumptive service
- Rule 13, Section 12 — Electronic mail and facsimile subject and title of pleadings and other documents