Exhibit 99.1

April 08, 2025	510 Burrard St, 3rd Floor
	Vancouver BC, V6C 3B9
	www.computershare.com

To:   All Canadian Securities Regulatory Authorities

New York Stock Exchange

Subject: MAG SILVER CORP.

Dear Sir/Madam:

We advise of the following with respect to the upcoming Meeting of Security Holders for the subject Issuer:

Meeting Type :	Annual General and Special Meeting
Record Date for Notice of Meeting :	May 01, 2025
Record Date for Voting (if applicable) :	May 01, 2025
Beneficial Ownership Determination Date :	May 01, 2025
Meeting Date :	June 18, 2025
Meeting Location (if available) :	Vancouver, BC
Issuer sending proxy related materials directly to NOBO:	No
Issuer paying for delivery to OBO:	Yes
Notice and Access (NAA) Requirements:
NAA for Beneficial Holders	Yes
Beneficial Holders Stratification Criteria:	Not Applicable
NAA for Registered Holders	Yes
Registered Holders Stratification Criteria:	Not Applicable

Voting Security Details:

Description	CUSIP Number	ISIN
COMMON SHARES	55903Q104	CA55903Q1046

Sincerely,

Computershare

Agent for MAG SILVER CORP.